ES340105A1 - Braking-system safety hydraulic valves of articulated vehicles - Google Patents

Braking-system safety hydraulic valves of articulated vehicles

Info

Publication number
ES340105A1
ES340105A1 ES340105A ES340105A ES340105A1 ES 340105 A1 ES340105 A1 ES 340105A1 ES 340105 A ES340105 A ES 340105A ES 340105 A ES340105 A ES 340105A ES 340105 A1 ES340105 A1 ES 340105A1
Authority
ES
Spain
Prior art keywords
valve
trailer
tractor
brake
brakes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES340105A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Automobiles Citroen SA
Original Assignee
Andre Citroen SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Andre Citroen SA filed Critical Andre Citroen SA
Publication of ES340105A1 publication Critical patent/ES340105A1/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
    • B60T13/26—Compressed-air systems
    • B60T13/268—Compressed-air systems using accumulators or reservoirs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/58—Combined or convertible systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/18—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle weight or load, e.g. load distribution
    • B60T8/1837—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle weight or load, e.g. load distribution characterised by the load-detecting arrangements
    • B60T8/185—Arrangements for detecting vehicle level

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Regulating Braking Force (AREA)
  • Braking Systems And Boosters (AREA)

Abstract

A brake valve assembly 16, adapted to form part of a fluid-pressure braking system of an articulated vehicle wherein the tractor brakes are controlled hydraulically via a dual brake valve 14, which apportions the fluid pressures in lines 15, 15a according to the loads on the front and rear axles in the absence of the trailer, and wherein the trailer brakes are controlled pneumatically through an application valve 17 operable by an output member 51 of the valve assembly 16, consists of a slide valve 41 adapted to connect one or the other of lines 15, 15a to a chamber 48 according to whether or not pressure exists in line 15a, thus allowing for failure of either line while retaining independence, a piston 49 responsive to the pressure in chamber 48 to actuate the output member 51 and, via a lever 56, operate the input member 59 of valve 17 in accordance with pedal pressure, and a load-responsive throttling valve between each of the lines 15, 15a and the corresponding one of a pair of output lines 18, 18a leading respectively to the front and rear wheel brakes of the tractor, the two throttling valves being controlled together in response to the load on the rear axle of the tractor, whereby when the trailer is being supported by the tractor its brakes are applied before those on the tractor. Each throttling valve consists of a ball 60 pressed against its seat with a force which is variable in accordance with load on the rear axle of the tractor, the force being applied through an arm 65 or 65a. These arms are carried on shafts 75 carrying levers 76, 76a which are connected by links 77, 77a, a beam 78 and spring 79 to a lever 81 associated with a shock absorber 82 of the tractor rear axle suspension. When the trailer is disconnected from the tractor the arms 65, 65a are clear of the balls 60, as shown, whereby no throttling of the fluid flow occurs. A ball valve 68 is associated with each of the throttling valves to allow return of the hydraulic fluid on brake release. Accumulators 11, 12, in association with a main accumulator 7 and pump 4, supply hydraulic fluid to the brake valve 14 which is operated by a pedal. A main air reservoir 22 supplies compressed air to the valve 17 and via a hose 28 to an emergency relay valve 26 on the trailer which applies the trailer brakes in the case of pressure failure by supplying air from an emergency reservoir 29 on the trailer. Normally air is supplied to the trailer brake cylinders 32 via the valve 17 and hose 25. In addition, a parking brake is provided for the trailer comprising a handbrake-operated valve 34 on the tractor supplying air from an auxiliary air reservoir 23 via a hose 35 to an auxiliary trailer brake cylinder 36.
ES340105A 1966-05-04 1967-05-03 Braking-system safety hydraulic valves of articulated vehicles Expired ES340105A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR60216A FR1490558A (en) 1966-05-04 1966-05-04 Hydraulic safety valve for a brake system of an articulated vehicle

Publications (1)

Publication Number Publication Date
ES340105A1 true ES340105A1 (en) 1968-06-01

Family

ID=8607801

Family Applications (1)

Application Number Title Priority Date Filing Date
ES340105A Expired ES340105A1 (en) 1966-05-04 1967-05-03 Braking-system safety hydraulic valves of articulated vehicles

Country Status (9)

Country Link
US (1) US3410609A (en)
BE (1) BE697805A (en)
DE (1) DE1655031A1 (en)
ES (1) ES340105A1 (en)
FR (1) FR1490558A (en)
GB (1) GB1141337A (en)
LU (1) LU53540A1 (en)
NL (1) NL6706211A (en)
SE (1) SE341537B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2201181C2 (en) * 1972-01-12 1974-02-14 Westinghouse Bremsen- U. Apparatebau Gmbh, 3000 Hannover Load-dependent brake force regulator for a dual-circuit brake system for vehicles that can be actuated by pressure medium
SE462152B (en) * 1988-09-09 1990-05-14 Saab Scania Ab SETTING AND ARRANGEMENTS FOR BRAKE ADJUSTMENT BETWEEN A TRUCK VEHICLE AND A CONNECTED SEMITRAILER
CN108758049B (en) * 2018-08-26 2024-12-20 北京博达顺源天然气有限公司 Safety valve components and automatic shut-off gas equipment

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2675099A (en) * 1950-10-24 1954-04-13 Troy Leonard Fluid pressure vehicle braking system
US2694468A (en) * 1951-03-09 1954-11-16 Bendix Aviat Corp Tractor-trailer brake system
FR1183131A (en) * 1957-09-19 1959-07-03 Renault Vehicle braking improvements
FR1410287A (en) * 1964-07-27 1965-09-10 Citroen Sa Andre Three-axle brake distribution system

Also Published As

Publication number Publication date
GB1141337A (en) 1969-01-29
DE1655031A1 (en) 1971-10-07
US3410609A (en) 1968-11-12
BE697805A (en) 1967-10-30
LU53540A1 (en) 1967-06-27
SE341537B (en) 1971-12-27
NL6706211A (en) 1967-11-06
FR1490558A (en) 1967-08-04

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